NMScrew Jack
The NM series worm gear screw lifting jack is a basic lifting component that conforms toJB/T8809—1998(Original)JB/ZQ4391—86Standard. Load capacity2.5—120TCompact structure, small size, light weight, wide power sources, low noise, easy installation, flexible operation, multiple functions, various matching forms, high reliability, and long service life. Capable of accurately controlling and adjusting the lifting or propulsion height according to a certain program. Can be directly driven by an electric motor or other power source, or operated manually. Input speed1500r/minEnhance speed2.7m/minVarious structural styles and assembly methods are available, with the lifting height manufactured according to customer requirements. The device can be self-locking.
Screw jack, also known as a spiral drive mechanism. It is primarily used to convert rotary motion into linear motion or vice versa. There are types that mainly transmit energy, such as spiral presses and jacks; others that mainly transmit motion, like the feed screws on machine tool tables; and still others that adjust the relative positions of parts, such as spiral drive mechanisms. Screw lifters come in two types: sliding friction and rolling friction.
Worm gear material
Aluminum bronzeZQAl9-4High strength, excellent wear resistance, suitable for operation under general loads.
Tin bronzeZCuSn10Pb1High hardness, excellent wear resistance, less prone to locking, good casting and machining properties, suitable for operation under high loads and speeds. Our companyDMHelical gears of the series products are all made of10-1Tin bronze.
Processing Technology
Raw material cutting and rough turning
Tempering treatment (to improve the mechanical properties of the material)
半-finished turned outer circle, coarse turned helical surface
Precision turned outer diameter, precision turned helical surface
Spiral face quenching (Enhances spiral face hardness, reduces wear rate)
Precision ground shaft ends and bearing positions
Milling keyways
Precision ground helical surface (precision grinding on screw machines to reduce helical surface roughness, improve working surface friction, and enhance transmission efficiency)
Lead Screw Material
20CrMnTiSurface carburizing treatment offers excellent machinability, minimal machining deformation, and good fatigue resistance.
40CrAxle parts commonly use materials that, after tempering treatment, exhibit excellent mechanical properties with high strength and good toughness.
45#The steel, after heat treatment, boasts enhanced strength and machinability.
Processing Technology
Raw material cutting and rough turning
Quenching and tempering (improving the mechanical properties of the material)
Semi-finished turning, rough turning of external cylindrical surfaces, and helical surfaces
Precision turned outer diameter, precision turned helical surface
Spiral surface quenching (Enhances spiral surface hardness, reduces wear rate)
Precision ground shaft and bearing seats
Milling keyways
Precision ground helical surface (precision grinding on helical gears, reducing surface roughness, improving working surface friction, enhancing transmission efficiency)
